Hi Folks, I just finished some initial experiments in loading the Robin Peel airway database for flightgear. The code is based on the ground network code that I wrote for AI taxiway following. While I have stuff working right now, one major problem is becoming apparent: It takes approximately 6 to 7 minutes to load and initialize the entire airway database on my machine (yikes).
The major reason for this is that each route segment in Robin Peel's database is defined by the full coordinates of each start and end waypoint. The airway and ground networks operate by storing the waypoints and the routes separately. Therefore, for each Airway segment, I need to look up whether the defining waypoints have already been loaded, which is quite computationally intensive. My ground network code, on the other hand, reads data in which the waypoints and the route segments are stored separately to begin with, which makes it much faster to load. Right now, I can see a number of ways to proceed with this. My major objective is to use the airway database to create more realistic AI traffic behavior, but for just that purpose, I don't actually need to load the airway database into flightgear. I could also choose to pregenerate all the AI flightplans offline and let FlightGear read those on demand. I'm wondering though if there would be any future need for airway information inside FlightGear itself, for example in modeling GPS receivers or flight management computers. If so, it would still be worthwhile to convert the data into a native format that could much more rapidly be loaded into flightgear. Cheers, Durk ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
